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Old 06-18-2003, 20:50   #1 (permalink)
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AC Problem - DA LTD

I need some help here.

I had a faulty fan speed relay unit in the DA and have replaced it. However now I have a new problem. The AC isnt engaging and the AC control unit is reporting a fault (blinking for 6-8 seconds).

Looking in Gregories manual I have checked the wiring and have checked the blue wire on the fan relay control unit and to the best of my knowledge it should work. So according to Gregories there is only a high and low pressure switch, left on this circuit, before I get to the AC compressor.

So my question is:
Where is the low and high pressure switch and how do I test them.
How do I test the clutch circuit manually. Do I pass a 12v to the
clutch to ensure that it works etc.

Anybody got any answers or suggestions. I have an average garage with no specialist AC equipment but are sure the problem is simply wiring.
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Old 06-18-2003, 22:44   #2 (permalink)
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If there is no gas or low gas in the system the clutch wont work.

12v to the wire will bring the clutch in, do this without the engine running.

In don't trust Gregories!
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Old 06-18-2003, 23:56   #3 (permalink)
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Hey dude, what fault code does it report??? Get a multimeter and probe back from the blue wire under the dash (single clip, next too fan speed controller) You can short out the 2 wires to by-pass the pressure switch to check for clutch engagement. The switch is usually located next too the thermostatic valve on the passenger side firewall.

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Old 06-19-2003, 03:52   #4 (permalink)
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Re: AC Problem - DA LTD


More information? Which controller, the Climate control on the dash I assume and what am I looking for on the multimeter, so I can tell you the code.
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